<?php

header("content_type:text/html;charset-utf8");
$username=$_POST['username'];
$password=$_POST['password'];
$con=mysqli_connect("localhost","root","root","2014");
mysqli_query($con ,"set names utf8");
$res=mysqli_query($con,"select * from user where username ='$username'");
$row=mysqli_fetch_assoc($res);
if($row){
    if($row['password']===$password){
        $arr=[
            "meta" => [
                "status"=>1,
                "msg"=>"登陆成功"
            ],
            "data"=>null
        ];
    }else{
        $arr=[
            "meta"=>[
                "status"=>2,
                "msg"=>"密码或用户名错误"
            ],
            "data"=>null
        ];
    }

}else{
    $arr=[
        "meta"=>[
            "status"=>0,
            "msg"=>"用户名不存在"
        ],
        "data"=>null
    ];
}
echo json_encode($arr)
?>